Earl, Babbie <br/><br/>
The Practice of Social Research 

 - Boston  Cengage Learning  2016 
 - xxiv, 566p.  includes appendix, glosssary, bibliographic references and index 
<br/><br/><label>ISBN: </label>97810510494 
<br/><br/><label>Dewey Class. No.: </label>300.721 EAR